It was necessary to detect the cavernous sinus tumors with X - film, CT, MRI and angiogra - phy.

对海绵窦肿瘤做 X 线平片 、 CT, MRI及血管造影检查是必要的.

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The Seebeck coefficient measurement analysis indicated that Bi 2 - xTe 3 + x film have N - type semiconductor characteristic.

温差电性能测试分析表明,Bi_(2-x)Te_( 3+x )薄膜材料具有半导体特性,塞贝克系数不随温度变化.

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